Rails 3.2.16 version bump.
Some API additions
* include observation in POST /identifications response
* BUGFIX: as_json to seriazable_hash to ensure private coord logic
  happens even when observations are serialized as associates
* include identification taxon common names in GET /observations/:id
Added DeletedObservation to deal with syncing issues.
Several changes to photo tag parsing
* favor long name taxon matches over short ones
* only match all-caps codes in tags for exact matches
* machine tag to obs fields for local photos
Style attr in proj desc, minor style fix.